Power mechanism for wells



Aug- 23, 1932- .1. G. GlBsoN 1,873,380

POWER MECHANISM FOR WELLS Filed May 17, 1930 2 Sheets-Sheet l s I Q 37 3 54 24 @l T3 A 3a 3 57 zr 26 23 H /6 4 ,930 4 z I i ,27 i l 133. ma /9' I I 3/ 72 2gb 2o /7 g 0h28 /4 /o YW y 4 a z l V/ A /L `3 Y ATTOR EYS.

Aug. 23, 1932. J G, @BSW 19873380 POWER MECHANISM FOR WELLS Filed May 17. 1930 2 Sheets-Sheet 2 IN V EN TOR.

BY n.

A TTORN E YS.

Patented Aug. 23, 1932 JESSE e. GIBSON, or inlinro'nn, EnnsrLvnNIA' vPOWER MEenANIsM ron WELLS r Application mea' May 17,

Powers for wells, such as oil wells, are sub= jected to very severe strains. `ln'order to op-l erate them from convenient sources of power, such as electric motors and internal combus,l tion engines having high speeds, itis neces-V sary to supply gearing b-y means of which the cranks of the power may be reduced to a pumping speed. Various expedients have been utilized for this purpose, but either they. are very bulky, or develop weaknesses under the severe loads and shocks to which'the power is subjected. The present invention 1s designed to simplify such a mechanism` providing it with a reduction gearing which may beincluded in a comparatively small spaceV and formed of such rugged proportions yas to easily sustain the shocks to which the apparar tus is subjected and further to utilizea gearing that can be readily .fabricated-` The-1nvention also contemplates a superior means for lubrication of the apparatus. fThis is important in that these devices are'placed at inf tervals through the eld and while performf ing a very severe duty are not in position to be very carefully serviced. Features and details of the invention will appear from` the specification and claims.A A preferred embodiment of the Vinvention is illustrated in the accompanying drawings as follows:- f '1 Fig.v 1 shows a plan view of the upper crank. y

Fig. 2 a central vertical section through-the apparatus. Y

f Fig. 3 a section on the line 3*-3 in Fig. 2. Y Fig. 4 a section on the line14-4 in Fig. 2.

Fig. 5 a detached view showing a substitute gearing reducing the speed. l, y ,p

y A base frame 1 is yprovidedwith the'oil sump walls 2. A drain pipe 3 is provided Vfor this sump. The base frame is secured'by bolts 4 to a foundation 5. y

A horizontal driving shaft 6 is carried inV roller bearings 7 in a journal extension 8 of the base section of the frame. A drive pulley 9 is provided for the drive shaft andthis is driven from any convenient sourcepof power (not shown). A beveled `gear 10 is Xed on the inner end of the shaft 6 and meshes with a beveled gear 11. The beveled gearll-is i930. serial No.153,247. f

fixed on avertical shaft 12 and removably se-` cured thereon by a bolt, or stud 13 extending into'the end of the shaft. i

The vertical: shaft is journaled in aroller bearing 14 arrangedinja top plate 15 of the base section of the frame. An eccentric-16 is fixed, or formed integrally with the shaft istY 12 and arranged Aimmediately*- above the plate 15. A roller bearing 17 -is arranged around Vthe eccentric 16 on which gears 18 and 19 are mounted. The vgearsllS. and 19-are rigidly, connected and. preferably of integral*construction. [They are. given an orbital movement as thefecc'entri'cis ro: tated with the shaft 12. Y. They are of slightly different diameter. at their i pitch line, the gear 21S-being ofslightly greater diameter than the gear 19. The ,gear 18` meshes with affixed internal gear 20.` The Xed gear has 'aV angef 20a and isl rigidlyv secured by bolts 20?) with the plate 15 of the base section of the frame. A `driven internal gear 21 meshes with the gear A19. "It -is secured to and fixed with aplate 22 by means of screws;23.` The plate 22 forms a connection with a driven shaft 24. This'driven shaft'is journaled by rollers 25 in a,:rol'ler bearing 26. The bearing 26 is carried by an lupper frame section 27 which is annular4 and oil-tight and connected with the lower frame section by bolts 28.",The upper frame secf tion and lower frame section when connected form an oil-tight receptacle'for alubricant. The plate 22 hasa bearing edge 29-which operates in a bearing 30 in the frame section l 27 andv the gear 21 has a bearing edgel which operates on a bearing surface 32 vin the frame section 27. Thusthe driven gear .and the ydriveni shaft have' roller bearingsincluding the rollers 25 and the bearings 30 1 and 31 giving it stability` and ample bearingy surface.- The shaft 24 has a bearing 33, at its upper end for the upper end of the shaft 12. A crank 34 is fixed on the upper end -of the shaft 24, being clamped thereon bybolts 35 andlocked with Va key 36. ,A crank pin 37 is secured with the crank by means of bolts is journaled on the crank pin 37 by means of a roller bearing 41y and pullrods 42 radiate 1 38 and locked with a key 39. A crank disc l from the crank disc in the usual manner. -A crank support 43 is fixed on the upper end of the pin 37 and a crank 44 is adjustably secured in the plate`43 by screws 45. A

crank pin 46 is arranged on the crank 44` and ay crank disc`47 is journaled on the pin 46. Pull rods 48 radiate from vthe crank disc 47 in theu'sual manner. Y Y

In the operation of thezdevice, poweris c delivered to the pulley9 and communicated# through the shafts and-gearinglto thevertical shaft 12. A slight reductiony is made between the gear 10 and l1. "The" gears18 and 19 form with the'gears 20 and :21 what ofthe power maybe readily' reduced by the slight variation in the epicyclic gear to aspeed of 18 revolutions per minute, thus f avoiding the use-ofr very large gears that are sometimesused, or worm? gears which give some trouble v1n these connections and pro- Y `vide gears that can bey readily fabricated and lubricated. The bearings of the cranks which y are subjected tothe severe shocks from the pull rods are also amply sup'ported'and.r the whole device occupies but a comparatively small space. .f f' A Y It is-desirable usually to change the speed of pumpingunder certain conditions and this can Vbe readily taken' Careof in thepresent apparatus by removing the gear 11 and substituting a-gear 50 (see Fig. 5), with a similar pinion 51 on the shaft 6. This may bef-conveniently accomplished through'a removable plate-52 whichis arranged at the side of the frame 1, for this purpose.VV VIn order to change the pitch line-of the gear 50V from that of kthe gear 11 a spacer plate 49 is providedwhich makes a simple means of ad# justing the position of the gear `l`5,0 tothe similarjgear, or pinion 51. A Y

' In lubricatingthe apparatus the lubricant is poured -in through a connection-52 there being aiplurality ofV these connections in as much as yinsomepositions these powers are Varranged on slopes'which tilt the powers as a whole somewhat and it is desirable to fill the entir'ecase formed bythe frameV with lubricant;v Thus` with the plurality of'jopenings the higherone maybe utilized forl filling.l

The shaft 12r has spirals 53 at its upper end andth'ese carry oil into a cavity 53a from which it passes by the passage 54 to lubricate the'bearing'26. Y

A lseries of vopenings 55 'extend aroundthe upper partV yof the case formed by the frame 27. Thesey are covered by vs'emicircular plates 56 which are secured on the frame by `bolts-`57f. `By removing thesey plates ya large opening is provided through which a cleansily accomplished by means of plates 18a and 19a at the ends ofthe gears 18 and .19 respectively, these plates being perforated at intervalsand ycontaining balls 185 and 195 respectively. Thege'arjs have an orbital movement karound the center of the shaft 12 and have al A rotary movement around the eccentric 16. The balls-therefore, follow different paths and cover'awearing surface on the plate 15 and-theyplate 22 of considerable extent. This assures quite along period of wear and also assures a: smooth, easy running of the'gears under any-axial thrust that may beplaced upon them. Y, 1 f

What I claim as new is f crank the bearing receiving the thrust of the crank;y a pull rod connection Von the crank;

Ina power for wells, thejcombination `and va bearingfor the vertical .shaft in' said connection, said shafty terminatingbelow the topof the connection. f Y i V2. In a power for'oil'wells, the combination ofi'a frame in the form' of an oil tight case; a vertically extended shaft journaled inthe vframe; 'apul'l rod crank;l an epicyclic gear between the crank and shaft comprising two orbitally movingrv and rigidly connected gears mounted off-Center on said .shaftl and having different pitch diameters; a stationary gear meshing with one oftheorbitally moving gears; a driven gear meshing with the' other-'orbitally moving gear; a connection between the driven gear and the crank;` anda pull rod connection-on the crank Vsaid frame throughy the case sustaining the entire pull thrust and, said case enclosing said gears and being provided withmeans forthe' introduction of lubricant at the top ofthe case and the drainage of a lubric'ant'from the bot- .tom of the case. Y 3. In a power Vfor oil wells," the Vcombinal tion of a frame in the form of an oil tight case; a vertically extended shaft journaled in the frame; apull rod crank above the case;

'ly connected gears mounted off-'center on said shaft and having different pitch diameters; a stationary gear meshing with one of the orbitally moving gears; a driven gear meshing with the other orbitally moving gear; a connection between the driven gear and the crank a bearing for the driven gear, said bearing receiving the thrust of the crank; a horizontal drive shaft at the bottom of the case; beveled gears connecting the horizontal shaft with the vertical shaft; a pull rod connection on the crank, said case enclosing the gear mechanism and bearings and being adapted to retain a lubricant for supplying the gears and bearings; and a removable j plate on the frame opposite the removable gears through which said gears may be rei moved. y 4. In a power for wells, the combination of a frame; a vertically extended shaft journaled in the frame; a pull rod crank; an epicyclic gear between the crank and shaft comprising two orbitally moving and rigidly connected gears mounted off-center on said shaft and having different pitch diameters; a stationary gear meshing with one of the orbitally moving gears; a driven gear meshing with the other orbitally moving gear; a connection between the driven gear and the crank; a pull rodv connection on the crank; and ball bearings comprising plane ball seats and ball retainers-at the ends of the orbitally moving gears guiding said balls in orbital movements on said plane ball seats and varying the path of travel on said plane ball 3.3 seats with each revolution.

5. The combination in an epicyclic gear structure of two orbitally moving and rigidly connected gears mounted olf center and having different pitch diameters; a station- 4c ary gear meshing with one of the orbitally moving gears; a driven gear meshing with the other orbitally moving gear; and ball bearings comprising plane ball seats and ball retainers at the ends of the orbitally moving gears guiding said balls in orbital movements on said plane ball seats and varying the path on said plane ball seats with each revolution.

In testimony whereof I have hereunto set my hand.

JESSEv G. GIBSON. 

